Table 4.

Pearson correlation of LCD, LCCI and RNFL thickness.

IOP boundary	LCD		LCCI		Comparison of correlation coefficients between LCD and LCCI
	r	P Value	r	P Value	u	P Value
IOP < 21 mmHg	− 0.405	0.032	− 0.527	0.004	1.0372	0.2996
IOP ≥ 21 mmHg	− 0.263	0.037	− 0.236	0.063	0.1910	0.8485
IOP < 25 mmHg	− 0.283	0.036	− 0.362	0.007	0.5854	0.5583
IOP ≥ 25 mmHg	− 0.122	0.477	− 0.243	0.153	0.8315	0.4057
IOP < 30 mmHg	− 0.279	0.029	− 0.335	0.008	0.4103	0.6816
IOP ≥ 30 mmHg	0.078	0.682	− 0.165	0.382	1.6230	0.1046
IOP < 35 mmHg	− 0.368	0.001	− 0.348	0.002	0.1522	0.8790
IOP ≥ 35 mmHg	0.040	0.889	− 0.263	0.343	2.0520	0.0402
Total data
Mean RNFL thickness	− 0.420	0.002	− 0.449	< 0.001	0.2372	0.8125
BMO-MRW	− 0.245	0.019	− 0.345	< 0.001	0.7275	0.4669

BMO-MRW = Bruch’s membrane opening minimum rim width; IOP = intraocular pressure; LCCI = lamina cribrosa curvature index; LCD = lamina cribrosa depth; RNFL = retinal nerve fiber layer.

All values < 0.05 at Pearson correlation analysis are presented in boldface.

The u value more than 1.96 (P < 0.05) was considered to be statistically significant.